MAX6338CUB

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Power management integrated circuits (PMIC) are integrated circuits used in power supply management to improve energy efficiency, regulate the voltage and current in circuits, and protect circuits from damage. Among these PMICs, supervisors, also known as supervisory circuits, are used to improve safety and reliability, monitor the state of the system, and protect components from voltage or power spikes. The MAX6338CUB is one of these supervisory circuits, used in different applications.

MAX6338CUB Application Fields

The MAX6338CUB can be found in a variety of applications, including Bluetooth, GPS, and other communication systems, automotive and industrial applications, wearables, and other systems. Its applications include:

• Central Processing Unit (CPU) and SoC voltage monitoring
• Power-supply sequencing, tracking, and monitoring
• Automotive cold-crank and idle-stop PMICs
• Power supplies, including boost converters, flyback converters, and linear regulators

The MAX6338CUB has a wide operating temperature range of -40°C to +125°C, making it suitable for use in extreme conditions. This makes it a good choice for automotive, industrial, and outdoor applications.

MAX6338CUB Working Principle

The MAX6338CUB is a 2-pin supervisor IC with an active-high RESET output. It monitors the supply voltage (VIN) through an internal power-on reset (POR) comparator, and compares it to a factory-programmed reset threshold voltage (VRESET). When VIN exceeds VRESET, the RESET output is pulled low, and the IC is in a reset state. When the supply voltage drops below VRESET, the RESET output is pulled high, and the IC is in an active state.

The MAX6338CUB also has a set of configurable detection and protection features, including voltage watchdog, brownout reset, and overvoltage protection with hysteresis. The voltage watchdog monitors the rate of change of the supply voltage, while the brownout reset feature keeps the system safe by resetting the system when the power supply voltage drops below the brownout level. The overvoltage protection feature monitors VIN and will reset the system if the voltage rises above the programmable overvoltage level.

In addition, the MAX6338CUB has a wide range of safe-startup options, including internal capacitor charge-up, capacitor / battery trickle charge, and external voltage start-up. These options help ensure that the system is safe and reliable from start-up to shutdown, making it suitable for mission-critical applications.

Conclusion

The MAX6338CUB is a versatile and reliable supervisor IC, designed for use in a wide range of applications. Its wide temperature range and configurable protection and detection features make it a good choice for automotive, industrial, and outdoor applications. By combining voltage monitoring, protection, and reset features into a single IC, the MAX6338CUB helps improve system reliability, safety, and efficiency while also reducing design complexity.

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